Improved machine for riveting hinges



H. M. RITTER.

Riveting Hinges.

Paten ted Dec. 15, 1868.

z i ness es:

[2: revea N.FETER$. PHOTO-UTHOGRAPMER WASHINGTON. D. C.

ing my invention.

HENRY M. BITTER, OF COVINGTON, KENTUCKY.

Letters Patent No. 84,907, dated December 15,1868.

IMPROVED MACHINE. FOR RIV'ETING- GES.

The Schedule referred to in these Lettem Patent and making part of the Bathe. -U-O-M- To whom t'mnay concern Be it known that I, HENRY M. BITTER, ofOovington, Kenton county, and State of Kentucky, have inrented a new and useful Mode of Heading Pins and,

Bolts; and I do hereby declare the following to be a full, clear, and exact description thereof, reference being had to the accompanying drawings, making part of this specification. I

My invention relates to a mode of riveting or heading p ns, bolts, 850., at o,ne or both ends, without heating or percussion, by the action of a peculiar millingtool, or a pair of oppositely-revolving and pressing milling-tools, and is. particularly intended for riveting the pintles of but-hinges, casters, and the like.

Figure l is a front elevation of a machine embody- Figure- 2 is a top view thereof.

Figure 3 is a'full-size representation of a pair of milling-tools, detached.

A is a lathe-bed, supporting a pair of head-stocks, B B, which can be securedat'any desired distance apart, by customary screw-bolts O 0'. v

The head-stocks carry a pair of slidable and rotary line-spindles, D D, which are revolved inopposite directions by means of belts E E, or otherwise, and are pressed toward each other, so as to bear. against opposite ends of the pin or bolt to be headed, by means of v spiral springs F F, operating through levers G G, con-v nected to the frame by means of shackles HE, and retracted by means of a treadle, I, .connected with said levers by means of rods J K and bell-cranks L L.

The spindles D D, being hollow, receive rods M M, which are pivoted to the levers G G The front end of each spindle is socketed, to carry and rotate a milling-tool, N N, ,whose radial corruga tions, it, serve both to grasp and to spread the ends-0f the piutle, rod, or bolt being operated upon.

The operator, placing his foot upon the'treadle, thereby retracts the milling-heads or tools N N, and the hinge, with its unheaded pintle, (see dotted lines, fig.

3,) being placed in posi tion, the tools N N are allowed to close upon the ends of the pintle, and form heads upon the same, when, the treadle beingagaiu depressed, the tools N N are thereby separated, so as to liberate the finished hinge and permit the insertion of another one.

Theabove; is my preferred form of apparatus for heading but-hinges, but where only one end requires heading, as in case of a caster, for example, the pintle, or that to which it is attached, is grasped in a vise or clamp, and held at rest, and the heading is eiiected by a single milling-tool operating in the same manner as the tool N or N, and even the pintles ofthe buthinges may be thus clamped and headed, if desired.

The "milling-tools may be advanced by the positive action of a treadle or otherwise, and may be retracted by springs or weights.

I claim herein as new, and of my invention' 1. A riveting-tool,. composed of a rod having v-' shaped grooves and intervening rounded projecting spurs on the end thereof, said grooves crossing one another at and in a direction at right angles to the longitudinal axis of said rod, substantially as described.

2. Also, a pair of riveting-tools, constructed as specified in the foregoing claim, in combination with mechanism-for operating the same, arranged substantially as described.

In testimony of which invention, I hereunto set my hand.

I HENRY M. BITTER. Witnesses:

GEO. H. KNIGHT, James H. LAYMAN. 

